english
1
general::
Phrase(s): join in (with someone) to join someone in doing something. • Do you mind if we join in with you? • Please join in.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Phrase(s): join in ((with) something) to participate in doing something. • The older boys joined in with the singing. • I’m glad they joined in. We needed basses.
McGrawhill's American Idioms And Phrasal Verbs